Sectional cement telegraph-pole.



G. T. SOUTHGATE.

SECTIONAK CEMENT TELEGRAPH POLE.

APPLICATION FlLED1uNs|s.19|s.

mz, l Patented oct-30,1911.

GEORGE T. SOUTIICvrA'lIEl,A OF BROOKLYN, NEW YORK.

SECTIONAL CEMENT TELEGRAPiH-POLE.

:7b all whom t may concern: v

Be it known that I, GEORGE T. SOUTH- GATE, a citizen ofthe United States, residing at Brooklyn, in the county oflings and State of New York, have invented certain new and useful Improvements in Sectional Cement Telegraph-Poles; and I do hereby declare the following to be a full, clear, and exact description of the invention, suoli as will enable others skilled in the art to `which it appertains to make and use the same.

My'invelltion relates to cement poles such as are used for the support of electrical conductors in the construction of electric power lilies and telegraph and telephone systems and for the supportv of span wires in elec- ;tricrailway systems.

The objects of my invention are Toproduce a pole substantially parabolical or tapering in longitudinal section and circular in cross section, which shall be con1- posed of a plurality of sections, each section being'pre-cast and pre-aged; said sections being of such al length *that they can be readily transported and readily assembled in the field;

-To form said sections with a metallic reinforeement and a cement covering so as to provide for ample tensile and compressive streng-.'.h and a. high and uniform lateral strength against tlexure;

To provide a'joint forjoining said section's together in such a manner as to insure that the joint will be as strong as the rest of the pole and that the metallic elements 4of said joint shall be thoroughly protected against the action of the elements;

To provide a sectional reinforced cement pole which shall be practically homogeneous 1n structure when erected; free fromv ilaws; which shall be better and cheaper than the cast iron, wrought iron or monolithic cement pole because of the less total weight of metal; the greater liexibility; the less brittleness; the greater resistance against corrosive action; which shall be more artistic in appearance than either l the cast iron or wrought iron pole; which shall require n o painting and which can be -inade longer or shorter at will-in order to suit varying characters of terrain.

Ilrthe drawings Figure 1 is a view partly -i'rrscetion and Patented 0ct. 30, 1917.

Application filed June 16, 1915. Serial N o. 34,492.

in section of my improved pola-showing how the pole steps may be applied to same if desired;

Fig. 3 is a longitudinal, sectional elevation of part of the top of my improved pole showing the manner of attachment of the cross-arms thereto; A

Fig. 4; is a partial View of the interior of the reinforcingmetallic tube. This View alsoshows how the sockets for supporting the pole steps are detachably secured to said reinforcing tube;

Fig. 5 1s a top plan View of the upper joint of the lower section shown in Fig. 2;'

Fig. 6 is a bottom plan view of the lower joint of the lower section shown in Fig. 2.

My improved pole consists of a plurality of body sections such as 10, 10, etc.

All of the body sections of my improved pole are made in the same way. The top and bottom sections are made slightly different from the body sections as Will be hereinafter described.

Each of the body sections l0 consists of a metallic reinforcement 11 provided with holes 12, or roughened or corrugated in any approved manner.

Circular flanges 13 and 14' are riveted ree spectively to the inside and the outside of the reinforcing tube 11 by rivets such as 15'. Just above the upper edge of the reinforcing tubeI l1 the llanges 12S and la are respectively ofl'set inwardly and outwardly to provide a recess 16 for a purpose hereinafter referred to'.

A plurality of rivets such as 17 are riveted or otherwise secured in the llanges 13 and 14, the bodies of said rivets extending across the recess 16; the upper edges of the flanges 13 and ,1l are beveled as a-t 1S. The lower end of each reinforcing ,tube 11 is pirovided with a pluralityof slots such as 19, equal in number tothe number of rivets 17, Y which extend upwardly from the lower edge thereof as at 20, lhen turn approximately 90.. de-

grecs and extend a short distance circumfer-- I when looking upwardly at theI bottom of the pole shown in Fig. 2, as at 21.

The reinforcing tube 11 isfalso provided with any desired number of holes as 22farf, ranged in pairs as shown in Fig, 4, each of said holes 22 being providbdwith a downward extension 23.

Sockets such as 24'are provided having a base 25 provided with two headed pins 26 on tlie inside of the base 25. These pins are the saine distance apart as the holes the beads of tb saidipins are slightly smaller thanthe uppeifportions of said holes and' the bodies of said pins are slightly smaller than the outward extension 23 of the holes 22.

The socset 2i is otherwise shaped in any approved manner and all parts of saine are cast integrally. .The socket 2li is provided with an interioi'ly threaded hole for the rel ception of the pole ste 27. A

After the reinforcing tube ll is con as' just described,A the sockets 2 4- are attached thereto if the pole steps such i tube ll is introduced iyitliin a suitable mold and tne cement covering 28 is applied to tbe inside .and the outside of the said tube l1. The upper edge of the cementl covering 128 is beveled as at 29 in line *with the bevel edges 1S of the circular flanges 13 and lei, lflie lower end of the cementco'vf ering 28 is beveled at a salient angle as at 30 to fit the reentrant angle sin'i'ilar to 29 of tbc nest loiver section.

'.lhe upper end ofl the base 3l is formed,

the same tlieviipper end of the-body sections l@ but tn@ lower end said base is flared outwardly as at and the lower end thereof is formed to a plane surface, so as to provide a good bearing surface at tbe ground f 2i great mixture suon as 34s maybe used to fill4 the interior of tlie base 3l if desired.v

The top of my improved pole is provided 'Witli any number of gains such as 36 for the reception of the cross-arms 87. Said cross-arms are Aprovided with a hole, or a plurality of holes, for the reception of a bolt or bolts such as 3%t The reinforcing tube 39 of the top of .my improved poleis provided with straps of iron snob as Ll() riveted thereto, the said straps being provided with threaded lioles for tbe reception of the bolts 38. The upper end of my' improved pole is covered with cement at 1li and the interior of the rein forcing tube is preferably iilled with cement as at fil-2.

The bottom, body and top sections of my .improved pole are precast and pronged so that tbe cement will be. hard before the sections are shipped from the factory. Thev bottom section S1 may be omitted entirely. or it may be made to conform to the shape pole omitting the flare the restv olf-,tbe

nillien the Isections are to be assembled iii the field, the bottom section 31 or the section similar to 10, if the bottom section is .not to be used, is placed in the foundation hole provided in .theground 33,` grouting such as i3 lof asuitable consistency is then `poured intotheiccess 16 to till up nearly to 'i 27' are to be used? and then the reinforc- Y Laagste the top of the bevel portion 29 of the body section 10. The next upper section is thenl l to have the lower protruding portion olf-the reinforcing tube 11 introduced Within tno recess 16 so that the body of the rivets 17 will enter part 20 of the slot 19, the upper section is then turned in a counter clock-U lower sections together with the grout mix.

ture fillingthe interstices between the said sections and the recess 16. The two `sections are then irmlylocked together by a Vbayonet joint, .the grout mixture securing the permanence of the joint and the protec-A tion of the metal from the Weather.

lill the sections-ofthe pole are secured together in tlns manner Wliicli insures that the pole, Wli'en completed, shall be extremely strong and able to resist the Wearing action .of the elements. i y

The pole When thus assembled is substantially parabolic or tapering in longitudinal? central section, and circular in cross section.

,l claiin2-- '1. The combination with 'a cement covering of a reinforcing tube extending at one end beyond said cement covering, and provided with Lsiiaped slots, a recess at the other end of said tube, and fixed rivets having bodies extending into said recess and grouting in said recess. l

2. The combination with a cement covering, of a reinforcing member extending belov: said cement covering and provided with l.,-shaped slots, a second cement covering having a reinforcing member provided'with a recess at its upper end, fixed rivets having bodies extending into said recess and adapted to forma locked joint With the slots of said first namedfreinforcing member by a Partial rotation of' said irst'namod member and grouting in said reces'sl 8. The combination Witlia cement covering', of 'a reinforcing tube vextending below said cement covering and provided with l.shaped slots, a second cement covering having a reinforcing tube provided with a. recess at its upper end, fixed rivets having bodies extending into said recess and adapted to form a locked joint With the slots of said first named reinforcing memf ber by a partial rotation of said lirst named member and grouting in said recess and between said cement coverings and vgrouting in said recess.

a. The combination with a reinforcing tube of a cement covering on the inside and 4outside, of' said tube and having a lovver salient V-shapedend, the lower end of said reinforcing tube being provided with 'lockin means and extending below the point of said salient V-shaped end; a' second rein forcing tube having coperating locking means at its upper end to receive the locking means on the lower end of said first named reinforcing tube and provided with a cement covering on the inside and outside of said tube having a, rentmnt V shaped groove to fit the salient V shaped lower. end of the cement covering of said first named reinforcing tube, and grouting in seid recess und between said V shaped end and groove.

5. The combination of a reinforcing tube provided with a slot, a, cement covering and adapted to lock with said slot and a fiat surface to bear against said tube..

n testimony whereof I aix my signature.

GEO. T. SOUTHGATE. 

